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Research explores solution for electricity generation

05 June 2019 | Story Leonie Bolleurs | Photo Leonie Bolleurs

Lucas Erasmus and Prof Hendrik Swart (right) are working on a joint project with Ghent University to find an attractive solution to address the energy demands of buildings, electric motor vehicles, and mobile electronics.

With a constant increase in the price of electricity, any innovation to replace this necessity in our daily lives is welcome.

The University of the Free State (UFS), whose vision is supported by an element of innovation, welcomes the recent agreement between its Department of Physics and Ghent University.

Attractive solution

Not only will this research – which aims to develop the materials necessary for transparent solar panels – enlarge the international research footprint of the UFS, but it is also an attractive solution to address the energy demands of buildings, electric motor vehicles, and mobile electronics without affecting their appearance.

According to Prof Hendrik Swart, from the UFS Department of Physics, the agreement between the two universities entails a joint doctoral degree in which both universities will supervise the project and the awarding of the doctorate. The student, Lucas Erasmus, will conduct research at both institutions.

Transparent solar panel

The idea with the research is to develop glass that is transparent to visible light, just like the glass you find in the windows of buildings, motor vehicles, and mobile electronic devices. However, by incorporating the right phosphor materials inside the glass, the light from the sun that is invisible to the human eye (ultraviolet and infrared light) can be collected, converted, and concentrated to the sides of the glass panel where solar panels can be mounted. This invisible light can then be used to generate electricity to power these buildings, vehicles, and electronic devices. The invention is therefore a type of transparent solar panel.

Implemented in cellphone screens

This technology can be implemented in the building environment to meet the energy demands of the people inside the buildings.

The technology is also good news for the 4,7 billion cellphone users in the world, as it can be implemented in the screens of cellphones, where the sun or the ambient light of a room can be used to power the device without affecting its appearance.

Another possible application is in electric cars, where the windows can be used to help power the vehicle.

Low-income housing

Erasmus added: “We are also looking at implementing this idea into hard, durable plastics that can act as a replacement for zinc roofs.”

“This will allow visible light to enter housing, and the invisible light can then be used to generate electricity. The device also concentrates the light from a large area to the small area on the sides where the solar panels are placed; therefore, reducing the number of solar panels needed and, in return, reducing the cost.”

The technology will take about a decade to implement.

“This study is currently ongoing, and we are experimenting and testing different materials in order to optimise the device in the laboratory. After this, it needs to be upscaled in order to test it in the field. It is truly the technology of the future,” said Erasmus.

Video: Barend Nagel

News Archive

Ghanaian academic speaks about next generation of African scholars

2013-10-08

Attending the seminar were from left: Adv Erika Cilliers, Sisa Mlonyeni (both from the Office of the Public Protector), Prof Adomako Ampofo and Prof Heidi Hudson, Head of the Centre for Africa Studies.
Photo: Jerry Mokoroane
08 October 2013

Prof Akosua Adomako Ampofo, one of the Centre for Africa Studies’newly-appointed advisory board members, addressed students and staff on 3 October 2013. Her topic Are you the scholar Africa needs?enthralled the audience with the passionate way in which she argued for nurturing activist-scholars rather than scholars who simply produce knowledge for the sake of it. “It is more urgent than ever before that … we do not simply see our roles as researchers and teachers, but that we are committed to impacting our communities” for the better – also by “making our knowledge production globally visible,” she argued. Africa is said to contribute less than 0.5 percent of the world’s scientific publications. The fact that most of these – and nearly all of the social science production – emanate from just three nations (Egypt, Nigeria and South Africa) means that many countries are absent from the radar.

According to her, the next generation of African scholars will have to compete within a hostile terrain where private universities are proliferating and costs of higher education are on the rise. These scholars will have to possess 22nd century skills, but a 20th century heart and sensitivity for the continent and its people.

Drawing on Kwame Nkrumah, Prof Ampofo proposed three guiding principles for becoming the scholars Africa needs. Firstly, by having a passion for knowledge as well as an Africa-centred knowledge – “nobody can tell our stories better than we can.”. Secondly, to translate our research into outputs not only in the form of internationally-recognised publications, but also in popular sources that will be read by a much wider public. And lastly, to carrying the torch for teaching and learning in the classroom – preparing our students to serve Africa or, as Nkrumah said, producing “devoted men and women with imagination and ideas, who, by their life and actions, can inspire our people to look forward to a great future.”.

Akosua Adomako Ampofo is a Professor of African and Gender Studies, and Director of the Institute of African Studies at the University of Ghana, Legon. An activist-scholar, her current work addresses African knowledge systems; race, ethnicity and identity politics; gender-based expressions of violence; constructions of masculinities; women and work; and popular culture. She is currently co-editing a volume titled, Transatlantic Feminisms: Women and Gender in Africa and the African Diaspora.In 2010, she was awarded the Sociologists for Women in Society Feminist Activism Award.

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